| Diffusive transport of light in a two-dimensional disordered packing of disks: analytical approach to transport mean free path. | |
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MedLine Citation:
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PMID: 18851007 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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We study photon diffusion in a two-dimensional random packing of monodisperse disks as a simple model of granular media and wet foams. We assume that the intensity reflectance of disks is a constant r . We present an analytic expression for the transport mean free path l;{*} in terms of the velocity of light in the disks and host medium, radius R and packing fraction of the disks, and the intensity reflectance. For glass beads immersed in air or water, we estimate transport mean free paths about half the experimental ones. For air bubbles immersed in water, l;{*}R is a linear function of 1epsilon , where epsilon is the liquid volume fraction of the model wet foam. This throws light on the empirical law of Vera [Appl. Opt. 40, 4210 (2001)] and promotes more realistic models. |
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Authors:
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Zeinab Sadjadi; Mirfaez Miri; M Reza Shaebani; Sareh Nakhaee |
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Publication Detail:
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Type: Journal Article Date: 2008-09-17 |
Journal Detail:
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Title: Physical review. E, Statistical, nonlinear, and soft matter physics Volume: 78 ISSN: 1539-3755 ISO Abbreviation: Phys Rev E Stat Nonlin Soft Matter Phys Publication Date: 2008 Sep |
Date Detail:
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Created Date: 2008-10-14 Completed Date: 2008-12-04 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101136452 Medline TA: Phys Rev E Stat Nonlin Soft Matter Phys Country: United States |
Other Details:
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Languages: eng Pagination: 031121 Citation Subset: - |
Affiliation:
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Institute for Advanced Studies in Basic Sciences (IASBS), P.O. Box 45195-1159, Zanjan 45195, Iran. |
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